#include<iostream>
using namespace std;

class day {
public:
	void Init(int year,int mouth,int day)
	{
		_year = year;
		_mouth = mouth;
		_day = day;
	}

	//void Print()
	//{
	//	printf("%d-%d-%d\n", _year, _mouth, _day);
	//}

	void Print()
	{
		printf("%d-%d-%d\n", this->_year, this->_mouth, this->_day);
	}

private:
	int _year;
	int _mouth;
	int _day;
};

//int main()
//{
//	day d1, d2;
//	d1.Init(2022, 9, 29);
//	d2.Init(2022, 10, 1);
//	d1.Print();
//	d2.Print();
//}


class A
{
public:
	void PrintA()
	{
		cout << _a << endl;
	}
private:
	int _a;
};

//int main()
//{
//	A* p = nullptr;
//	p->PrintA();
//	return 0;
//}